for(Stall stall : stallList){

               boolean flag = false;

               for(DeliveryStallCommission deliveryStallCommission : riderList){

                   if(stall.getId() ==deliveryStallCommission.getStallId().longValue()){

                       flag=true;

                       break;

                   }

               }

               if(!flag){//表示stallList 的stall.getid值不存在于 riderList 的delivertStallCommission.getStallId

                   DeliveryStallCommission deliveryStallCommission = new DeliveryStallCommission();

                   deliveryStallCommission.setStallId(stall.getId().intValue());

                   deliveryStallCommission.setStallName(stall.getName());

                   riderList.add(deliveryStallCommission);

               }

           }